Chung-Jen Wu

VGHKS Kaohsiung Veterans General Hospital, Kaohsiung, Kaohsiung, Taiwan

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Publications (5)20.27 Total impact

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    ABSTRACT: Rebleeding occurs in 10% to 30% of bleeding ulcer patients receiving endoscopic epinephrine injection therapy. It remains unclear whether addition of a secondary clip therapy following epinephrine injection may reduce the rebleeding rate of high-risk bleeding ulcers. To compare the efficacies of epinephrine injection alone and epinephrine injection combined with hemoclip therapy in treating high-risk bleeding ulcers. Prospective randomized controlled trial. A medical center in Taiwan. One hundred five bleeding ulcer patients with active spurting, oozing, nonbleeding visible vessels or adherent clots in ulcer bases. Endoscopic combination therapy (n = 52) or diluted epinephrine injection alone (n = 53). Initial hemostasis rates and recurrent bleeding rates. Initial hemostasis was achieved in 51 patients treated with combination therapy and 49 patients with epinephrine injection therapy (98% vs 92%, P = .18). Bleeding recurred in 2 patients in the combination therapy group and 11 patients in the epinephrine injection group (3.8% vs 21%, P = .008). Among the patients with rebleeding, repeated combination therapy was more effective than repeated injection therapy in achieving permanent hemostasis (100% vs 33%, P = .02). No patient required an emergency operation in the combination therapy group. However, 5 patients in the epinephrine injection group underwent emergency surgery to arrest bleeding (0% vs 9%, P = .023). Treatment outcome of endoscopic hemoclip therapy is related to the techniques of endoscopists. Endoscopic combination therapy is superior to epinephrine injection alone in the treatment of high-risk bleeding ulcers.
    Gastrointestinal Endoscopy 06/2006; 63(6):767-73. · 5.21 Impact Factor
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    ABSTRACT: This prospective, randomized, controlled, head-to-head study was conducted to compare the efficacies of esomeprazole- and pantoprazole-based triple therapies for Helicobacter pylori eradication. From January 2002 to October 2003, 200 H. pylori-infected patients were randomly assigned to undergo twice daily treatment with esomeprazole 40 mg (n = 100) or pantoprazole 40 mg (n = 100) combined with clarithromycin 500 mg and amoxicillin 1 g for 1 wk (ECA and PCA groups, respectively). Follow-up endoscopy was performed at 8 wks after the end of treatment to assess the treatment response. Intention-to-treat analysis demonstrated a significantly higher eradication rate for the ECA group than for the PCA group (94%vs 82%, respectively, p= 0.009). Per-protocol analysis also showed similar results (97%vs 84%, p= 0.003). Both groups had similar frequencies of adverse events (15%vs 24%) and drug compliance (97%vs 96%). Multivariate analysis disclosed that the use of esomeprazole (OR: 1.56, 95% CI, 1.11-2.19) and good compliance 7.39 (95% CI, 1.27-42.95) were independent predictors of treatment success. Alcohol drinking was an independent predictor of eradication failure (OR: 0.18; 95% CI, 0.06-0.54). Esomeprazole-based triple therapy demonstrated a higher eradication rate than pantoprazole-based regimen. The differences in eradiation efficacies between the two study groups may be related to the more powerful acid inhibition effect and stronger anti-H. pylori activity of esomeprazole compared to pantoprazole.
    The American Journal of Gastroenterology 12/2005; 100(11):2387-92. · 9.21 Impact Factor
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    ABSTRACT: To report the clinical experiences in the application of clip-assisted endoscopic method for nasoenteric feeding in patients with gastroparesis and patients with gastroesophageal wounds, and to compare the efficacy of nasoenteric feeding in these two indications. From April 2002 to January 2004, 21 consecutive patients with gastroparesis or gastroesophageal wounds were enrolled and received nasoenteric feeding for nutritional support. A clip-assisted method was used to place the nasoenteric tubes. Outcomes in the two groups were compared with respect to the successful rate of enteral feeding, percentage of recommended energy intake (REI), and complication rates. The gastroparesis group included 13 patients with major burns (n = 7), trauma (n = 2), congestive heart failure (n = 2) and post-surgery gastric stasis syndrome (n = 2). The esophageogastric wound group included eight patients with tracheoesophageal fistula (n = 2) and wound leakage following gastric surgery (n = 6). Two study groups were similar in feeding successful rates (84.6% vs 75.0%). There were also no differences in the percentage of REI between groups (79.4% vs 78.6%). Additionally, no complications occurred in any of the study groups. Nasoenteric feeding is a useful method to provide nutritional support to most of the patients with gastroparesis who cannot tolerate nasogastric tube feeding and to the cases who need bypass feeding for esophageogastric wounds.
    World Journal of Gastroenterology 07/2005; 11(24):3714-8. · 2.55 Impact Factor
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    ABSTRACT: To elucidate the relations between the myeloperoxidase (-468)G-->A polymorphism and the development of duodenal ulcer (DU), and to investigate the impacts of this host genetic polymorphism on the histopathological features of Helicobacter pylori (H pylori)-related gastritis. In a case-control study of 115 consecutive DU patients and 182 controls, the myeloperoxidase (-468)G-->A polymorphism was genotyped. Additionally, gastric mucosal changes were examined according to the updated Sydney System. The two study groups differed in the distributions of myeloperoxidase genotypes (P = 0.008). All six individuals carrying myeloperoxidase A/A genotypes were in the DU group. The carriage of myeloperoxidase allele A and H pylori infection were associated with an increased risk of DU with odds ratios (OR) of 2.3 and 5.8, respectively. The combined risk of the carriage of myeloperoxidase allele A and H pylori infection for DU was 8.7 (95% CI, 3.5-21.8). In the H pylori-infected individuals, allele A carriers displayed higher bacterial density scores (P = 0.04) in the antrum than did non-carriers. This work verifies for the first time the association of myeloperoxidase (-468)G-->A polymorphism with antral H pylori density and DU disease. The mechanisms underlying this genetic polymorphism in developing DU disease merit further investigations.
    World Journal of Gastroenterology 06/2005; 11(18):2796-801. · 2.55 Impact Factor
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    ABSTRACT: Recent studies suggest that cetraxate possesses anti-Helicobacter pylori (H. pylori) activity. We therefore conducted this pilot study to investigate the efficacy of a cetraxate-based triple therapy and to compare the regimen with proton pump inhibitor-based triple therapy. From April 2001 to January 2002, a total of 58 H. pylori-infected patients were randomly assigned to 1 of 2 regimens for 1 week: cetraxate plus clarithromycin and amoxicillin (CCA group) or pantoprazole plus clarithromycin and amoxicillin (PCA group). Follow-up endoscopy was performed at 8 weeks after the end of treatment to assess the treatment response. Intention-to-treat analysis showed that the eradication rates of the CCA group (n = 27) and PCA group (n = 31) were 70.4% and 93.5%, respectively. The CCA group had a significantly lower eradication rate than the PCA group (p = 0.03). Per-protocol analysis also showed similar results (69.2% vs. 96.7%, p = 0.01). However, the frequency of adverse events in the CCA group was lower than that of the PCA group (3.7% vs. 25.8%, p = 0.03). Univariate analysis showed that the eradication rate was significantly related to proton pump inhibitor therapy (93.5% vs. 70.4%, p = 0.03 ) and smoking habit (66.7 % vs. 88.4%, p = 0.05), but multivariate analysis disclosed that proton pump inhibitor therapy was the only independent factor predicting treatment success (p < 0.05). Cetraxate-based triple therapy is less effective than pantoprazole-based triple therapy in the treatment of H. pylori infection. However, the former has a lower frequency of adverse effects than the latter.
    Journal of the Chinese Medical Association 05/2004; 67(4):161-7. · 0.75 Impact Factor

Publication Stats

95 Citations
20.27 Total Impact Points


  • 2004–2006
    • VGHKS Kaohsiung Veterans General Hospital
      • Department of Internal Medicine
      Kaohsiung, Kaohsiung, Taiwan